EESA06H3 Final: EESA06 Final Exam Ch11 Summary + 40 MCQ/T or F

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Tectonic forces result in deformation of the earth"s crust. Stress (force per unit area) is a measure of the tectonic force and confining pressure acting on bedrock. Strained (changed in size or shape) rock records past stresses, usually as joints, faults, or folds. A geologic map shows the structural characteristics of a region. Strike and dip symbols on geologic maps indicate the attitudes of inclined surfaces such as bedding planes. The strike and dip of a bedding surface indicate the relationship between the inclined plane and a horizontal plane. If rock layers bend (ductile behaviour) rather than break, they become folded. Rock layers are folded into anticlines and synclines and recumbent folds. If the hinge line of a fold is not horizontal, the fold is plunging. Older beds exposed in the core of a fold indicate an anticline, whereas younger beds in the centre of the structure indicate a syncline.

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